The Rubber ButtPad, 0, 30 comes standard with the CTR and MOE MilSpec models as well as all STR, ACSL, ACS and UBR stocks and utilizes a firm rubber that is designed for enhanced shoulder purchase and improved impactdrop mitigation, May also be installed on CommercialSpec MOECTR stocks, but may prohibit use of fully collapsed position, All mounting hardware included, Color: Black, Made in USA, SKU: TCLGR1586